Astronomers uncover closest pair of supermassive black holes yet

Astronomers have uncovered the closest pair of supermassive black holes yet (ESO/Voggel et al)

Astronomers have observed the closest pair of supermassive black holes to Earth ever seen.

There is much less separation between the two objects than any other pair than has previously been spotted, and they will eventually merge into one giant black hole, researchers say.